/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2008-2011, Salzburg Research. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * - Neither the name of the KiWi Project nor the names of its contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * Contributor(s):
 * sschaffe
 *
 * File Info:
 * User: sschaffe
 * Date: 2011/01/04
 * Time: 15:27
 *
 * Project: KiWi2, kiwi-core module
 */

package kiwi.core.webservices.config;

import kiwi.core.api.config.ConfigurationService;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.TypeReference;
import org.slf4j.Logger;

import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.*;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import java.io.BufferedReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Add file description here!
 * <p/>
 * User: sschaffe
 */
@ApplicationScoped
@Path("/core/config")
@Produces({"application/json"})
@Consumes({"application/json"})
public class ConfigurationWebService {

    @Inject
    private ConfigurationService configurationService;

	@Inject
    private Logger log;

    @GET
    @Path("/list")
    @Produces("application/json")
    public Map<String,Object> listConfiguration() {
        HashMap<String,Object> result = new HashMap<String,Object>();

        for(String key : configurationService.listConfigurationKeys()) {
            result.put(key, configurationService.getConfiguration(key));
        }
        return result;
    }



    @GET
    @Path("/data/{key}")
    @Produces("application/json")
    public Response getConfiguration(@PathParam("key") String key) {
        Object value = configurationService.getConfiguration(key);
        if(value != null) {
            return Response.status(200).entity(value).build();
        } else {
            return Response.status(404).build();
        }
    }

	@POST
	@Path("/data/{key}")
	@Consumes("application/json")
	public Response setConfiguration(@PathParam("key") String key, @Context HttpServletRequest request) {
		try {
			//log.info(getContent(request.getReader()));
			ObjectMapper mapper = new ObjectMapper();
			List<String> values = mapper.readValue(request.getInputStream(), new TypeReference<ArrayList<String>>(){});
			configurationService.setConfiguration(key,values);
			return Response.status(200).build();
		} catch (JsonMappingException e) {
			log.error("cannot parse input into json",e);
		} catch (JsonParseException e) {
			log.error("cannot parse input into json",e);
		} catch (IOException e) {
			log.error("cannot parse input into json",e);
		}
        return Response.status(400).build(); // bad request
	}

	@DELETE
	@Path("/data/{key}")
	@Consumes("application/json")
	public Response deleteConfiguration(@PathParam("key") String key) {
        if(configurationService.getConfiguration(key) != null) {
            try {
                configurationService.removeConfiguration(key);
                return Response.status(200).build();
            } catch (Exception e) {
                log.error("cannot delete configuration",e);
                return Response.status(500).build();
            }
        } else {
            return Response.status(404).build();
        }
	}

	public String getContent(BufferedReader r) {
		String s;StringBuffer b = new StringBuffer();
		try {
			while((s = r.readLine()) != null) {
				b.append(s);
			}
		} catch (IOException e) {
			e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
		}
		return b.toString();
	}

}
